I think on the other hand that vocation is a think since only a few decade. In ancient time, your only option was to do the same thing that your parents. There

I think on the other hand that vocation is a think since only a few decade. In ancient time, your only option was to do the same thing that your parents. There weren't as many professions. Vocation is a luxury. You gain money by serving other people's needs, not by following your vocation. It's a luxury humanity has been able to afford since only few decades (except aristocracy).